Interrupt Status. If you will be porting programs to an HP BASIC computer, you should be aware that bits 5 to 0 are defined differently under HP BASIC. Only bits 5 and 4 give the interrupt number, encoded to specify an interrupt in the range 3 to 6. This does not occur with HTBasic.
Bit Value Meaning
7 128
6 64
5-2 -
1,0 -
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